package com.itheima.service.db;

import com.itheima.domain.db.User;

public interface UserService {

    Long save(User user);

    User findByPhone(String phone);

    //根据id查询手机号
    String findPhoneByUserId(Long id);

    //更新手机号
    void update(User user);

    String userIdByPhone(Long userID);
}
